2601799421 has 4 divisors (see below), whose sum is σ = 2801937852. Its totient is φ = 2401660992.

The previous prime is 2601799397. The next prime is 2601799441. The reversal of 2601799421 is 1249971062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 817159396 + 1784640025 = 28586^2 + 42245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2601799421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601799441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100069196 + ... + 100069221.

It is an arithmetic number, because the mean of its divisors is an integer number (700484463).

Almost surely, 2^2601799421 is an apocalyptic number.

It is an amenable number.

2601799421 is a deficient number, since it is larger than the sum of its proper divisors (200138431).

2601799421 is a wasteful number, since it uses less digits than its factorization.

2601799421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200138430.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2601799421 is about 51007.8368586632. The cubic root of 2601799421 is about 1375.3860154331.

The spelling of 2601799421 in words is "two billion, six hundred one million, seven hundred ninety-nine thousand, four hundred twenty-one".